Pedido de patente depositado
#2.1
11/21/1989
RPI 996
Application data
Number
PI8903971Type
Filing
Publication
The letters patent expired on 12/22/2009: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.
Talk to a specialistLatest action published by the INPI: 11/21/1989. We update with every new RPI gazette, published weekly.
Applicants
Ngk Spark Plug Co. Ltd
JP
Inventors
T. O. (pessoa física)
JP
Publications in the Brazilian Industrial Property Gazette (RPI).
#2.1
11/21/1989
RPI 996
#21.1
Patente extinta em 02/08/2004
12/22/2009
RPI 2033
#16.1
12/26/1995
RPI 1308
#13.1
08/08/1995
RPI 1288
#9.1
03/07/1995
RPI 1266
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02/25/1992
RPI 1108
#3.1
03/20/1990
RPI 1010
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